Venus and Serena back in Wimbledon quarterfinals

Venus Williams of the U.S celebrates after beating Yaroslava Shvedova of Kazahkstan in their women's singles match on day nine of the Wimbledon Tennis Championships in London, Tuesday, July 5, 2016. (AP Photo/Tim Ireland) (The Associated Press)

Yaroslava Shvedova of Kazahkstan returns to Venus Williams of the U.S during their women's singles match on day nine of the Wimbledon Tennis Championships in London, Tuesday, July 5, 2016. (AP Photo/Tim Ireland) (The Associated Press)

Venus Williams of the U.S celebrates after beating Yaroslava Shvedova of Kazahkstan in their women's singles match on day nine of the Wimbledon Tennis Championships in London, Tuesday, July 5, 2016. (AP Photo/Tim Ireland) (The Associated Press)

The Williams sisters are back in the Wimbledon quarterfinals, 16 years after they first made it this far together at the All England Club.

Six-time champion Serena and five-time winner Venus will be playing on Tuesday for spots in the semifinals.

Top-ranked Serena will face No. 21-seeded Anastasia Pavlyuchenkova on Centre Court in one of the day's four women's quarterfinals. Eighth-seeded Venus was paired against Yaroslava Shvedova of Kazakhstan on No. 1 Court.

Australian Open champion and No. 4-seeded Angelique Kerber was scheduled first on Centre Court against No. 5 Simona Halep, with No. 19 Dominika Cibulkova facing Elena Vesnina on No. 1 Court.

One men's fourth-round match still needed to be completed, with No. 10 Tomas Berdych and Jiri Vesely resuming at two sets apiece.